\begin{tabular}{l*{3}c}
\hline\hline
 & (1) & (2) & (3) \\
\hline
prate\_1910&7.13&5.35&1.78*\\
&[2.91]&[2.50]&(0.81)\\
\hline
Observations & 18 & 32 & 50 \\
\hline\hline
\end{tabular}
